Cotton fabric high-concentration ozone water rapid bleaching equipment and operation system
By using cotton fabric bleaching equipment with high-concentration ozone water and a tension roller structure, the problems of inconvenient operation and insufficient contact in traditional bleaching methods have been solved, achieving automated, safe, and efficient bleaching results and generating non-toxic and harmless inorganic substances.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-26
- Publication Date
- 2026-03-31
AI Technical Summary
Traditional cotton bleaching methods are inconvenient to operate, require frequent manual monitoring of residual oxygen concentration, pose safety hazards, generate wastewater that is difficult to degrade, and the cotton fabric does not come into sufficient contact with hydrogen peroxide, affecting the bleaching effect.
Using high-concentration ozone water as a bleaching agent, combined with a closed bleaching box and tension roller structure, it achieves automated ozone concentration monitoring and full unfolding of cotton fabric, ensuring uniform contact and avoiding operation under high temperature conditions.
It achieves an automated bleaching process that requires no manual inspection, reducing safety hazards, lowering wastewater discharge, improving the uniformity and efficiency of bleaching, and generating non-toxic and harmless inorganic substances, which meets the requirements of green production.
Smart Images
Figure CN121760150A_ABST
Abstract
Description
Technical Field
[0001] The embodiments of the present invention relate to the field of bleaching equipment technology, specifically to a rapid bleaching equipment and operating system for cotton fabrics using high-concentration ozone water. Background Technology
[0002] In the dyeing and finishing process, yarns or cotton fabrics need to be bleached. Currently, the common methods for bleaching cotton fabrics are chlorine bleaching and hydrogen peroxide bleaching. Specifically, a barrel of hydrogen peroxide is injected into the dyeing vat, and the cotton fabrics are bleached through an oxidation reaction.
[0003] However, during the operation, workers need to continuously collect and test the residual oxygen concentration to determine whether the hydrogen peroxide is continuously working. This makes the method inaccurate and inconvenient to operate. Furthermore, the high-temperature steam generated may harm the operator and release a large amount of non-degradable wastewater containing COB, COD, and other pollutants. In addition, when cotton fabrics are simply soaked in hydrogen peroxide for bleaching, the fabrics will be wrapped up, resulting in insufficient contact between some areas of the fabric and the hydrogen peroxide, which in turn affects the bleaching effect. Summary of the Invention
[0004] To overcome the above-mentioned defects, embodiments of the present invention provide a rapid bleaching device and operating system for cotton fabrics with high concentration of ozone water, which solves the technical problems in the related technologies of inconvenient traditional bleaching operation, release of difficult-to-degrade wastewater, and insufficient contact between the cotton fabric and hydrogen peroxide, which affects the bleaching effect.
[0005] According to one aspect, at least one embodiment of the present invention provides a rapid bleaching device for cotton fabrics using high-concentration ozone water, comprising: A bleaching box, wherein the outer wall of the bleaching box is provided with an inlet and an outlet for cotton fabric to pass through; Several sets of tension rollers are arranged horizontally and rotate within the bleaching tank. The sets of tension rollers are spaced apart, and each set of tension rollers is used to tension the cotton fabric strip so that the entire cotton fabric strip comes into contact with the ozone water in the bleaching tank.
[0006] For example, in at least one embodiment of the present invention, a rapid bleaching device for cotton fabrics with high concentration of ozone water is provided, wherein several groups of tension rollers are arranged at intervals along a horizontal direction, and each group of tension rollers includes several tension rollers arranged at intervals from top to bottom.
[0007] For example, in at least one embodiment of the present invention, a rapid bleaching device for cotton fabrics with high concentration of ozone water is provided, wherein each set of tension rollers includes four tension rollers, and the cotton fabric belt can pass through each tension roller in sequence so that the entire cotton fabric belt comes into contact with the ozone water in the bleaching tank.
[0008] For example, in at least one embodiment of the present invention, a rapid bleaching device for cotton fabrics with high concentration of ozone water is provided, wherein each tensioning roller is a hollow roller and connected to an ozone supply pipe, and an ozone nozzle is provided on the outer peripheral wall of each tensioning roller so that each tensioning roller can spray ozone into the bleaching box.
[0009] For example, in at least one embodiment of the present invention, a rapid bleaching device for cotton fabrics with high concentration of ozone water is provided, wherein there are several ozone nozzles, which are arranged at intervals along the axial direction of the tension roller, and each ozone nozzle is provided with a one-way valve to prevent the ozone water in the bleaching tank from flowing back into the tension roller.
[0010] For example, in at least one embodiment of the present invention, a rapid bleaching device for cotton fabrics with high concentration of ozone water is provided, wherein the end of the tensioning roller is connected to the ozone supply pipe, and a serpentine groove is provided inside the tensioning roller along the axial direction of the tensioning roller, so that the ozone inside the tensioning roller can be uniformly discharged from the ozone nozzle.
[0011] For example, at least one embodiment of the present invention provides a rapid bleaching device for cotton fabrics with high concentration ozone water. The serpentine trough includes an arc plate one, an arc plate two, and an arc plate three wrapped sequentially from the inside out. Both ends of the arc plate one, the arc plate two, and the arc plate three are connected to the inner end wall of the tension roller. The arc plate one, the arc plate two, and the arc plate three are all arc-shaped and have openings. The opening of the arc plate three is away from the ozone nozzle, the opening of the arc plate two is away from the opening of the arc plate three, and the opening of the arc plate one is away from the opening of the arc plate two.
[0012] For example, in the cotton fabric high-concentration ozone water rapid bleaching device provided in at least one embodiment of the present invention, each tensioning roller is a passive rotating roller, so that the cotton fabric belt can drive the tensioning roller to rotate after flowing.
[0013] The cotton fabric high-concentration ozone water rapid bleaching system uses the aforementioned cotton fabric high-concentration ozone water rapid bleaching equipment.
[0014] The beneficial effects of the embodiments of the present invention are as follows: This high-concentration ozone water rapid bleaching equipment for cotton fabrics uses ozone water as the bleaching agent. It relies on its strong oxidizing properties to destroy the pigment molecular structure of cotton fabrics to achieve bleaching. Moreover, ozone will be reduced to oxygen after the reaction, so there is no need to detect the residual oxygen concentration to determine its working state. At the same time, the bleaching box forms a closed bleaching space, which can be equipped with an online ozone concentration detection system to achieve automated monitoring. This eliminates the need for frequent manual collection and detection, avoiding the inaccuracies and inconveniences caused by manual operation. Furthermore, ozone water bleaching does not require high temperature conditions. Ozone has a high oxidation bleaching efficiency at a room temperature of around 10°C and will not produce high-temperature vapors.
[0015] In addition, hydrogen peroxide bleaching produces a large amount of difficult-to-degrade wastewater containing pollutants such as COD, while ozone reacts with pigments and other substances in cotton fabrics, producing mostly inorganic substances such as water and carbon dioxide, and ozone itself does not leave any toxic or harmful residues.
[0016] Furthermore, the bleaching tank contains several sets of spaced tension rollers that provide forced tension to the cotton fabric belt. After entering the bleaching tank from the inlet, the cotton fabric belt must pass around the spaced tension rollers. This structure fully unfolds the cotton fabric belt, preventing it from stacking or curling up, and ensuring that every area of the cotton fabric belt is exposed to the ozone water. This guarantees that the entire cotton fabric is in contact with the ozone water, ensuring the uniformity of bleaching and solving the problem of poor bleaching effect caused by insufficient contact. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of the present invention and these drawings without any creative effort.
[0018] Figure 1 This is a schematic diagram of the structure of a rapid bleaching device for cotton fabrics using high-concentration ozone water in one embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the internal structure of the bleaching box in the embodiment; Figure 3 for Figure 1 A schematic diagram of the internal structure of the tension roller in the embodiment; Figure 4 for Figure 3 Enlarged view of section A.
[0019] In the diagram: 1. Bleaching box; 101. Inlet; 102. Outlet; 2. Cotton fabric belt; 3. Tensioning roller; 301. Ozone nozzle; 4. Serpentine trough; 401. Arc plate one; 402. Arc plate two; 403. Arc plate three; 404. Opening. Detailed Implementation
[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it.
[0021] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."
[0022] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0024] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.
[0025] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0026] Traditional cotton fabric bleaching methods, such as hydrogen peroxide bleaching, require frequent manual monitoring of residual oxygen concentration, which is cumbersome and lacks precision. Furthermore, the high-temperature steam generated during bleaching can harm operators, and the process also discharges large amounts of persistent wastewater containing pollutants like COD, creating significant environmental pressure. Additionally, cotton fabrics tend to clump and curl during soaking, resulting in insufficient contact with hydrogen peroxide and poor bleaching uniformity and effectiveness. To address these issues, a rapid bleaching system using high-concentration ozone water for cotton fabrics has been developed. This system includes a bleaching tank 1 as the core bleaching equipment, and a matching ozone generator. This ozone generator produces high-concentration ozone, which is then injected into the water within the bleaching tank 1 through an ozone supply pipe to create high-concentration ozone water. A chiller can be added to regulate the system's operating temperature, ensuring the ozone water maintains high-efficiency bleaching performance at suitable temperatures. An online ozone concentration monitoring system, combined with the closed structure of the bleaching tank 1, enables automated monitoring of ozone concentration without manual intervention (all of the above equipment utilizes existing technology and is not the core technology of this invention; therefore, it will not be elaborated upon further here).
[0027] In actual operation, the system first generates high-concentration ozone through an ozone generator, which is then dissolved in water to form high-concentration ozone water, and injected into a closed bleaching tank 1. The system temperature is then controlled to a normal temperature of around 10°C using a refrigeration unit. During the bleaching stage, the system's drive wheel and other components are activated to circulate the entire cotton fabric belt 2 system, allowing it to slowly pass through the high-concentration ozone water in the bleaching tank 1, and finally exit from the outlet 102 of the bleaching tank 1. Simultaneously, the ozone concentration in the bleaching tank 1 is monitored in real time by an online ozone concentration detection system to ensure that the bleaching reaction proceeds stably without the need for manual detection of residual components.
[0028] Operating principle: Ozone has extremely strong oxidizing properties. When high-concentration ozone water comes into contact with cotton fabrics, ozone molecules will destroy the molecular structure of pigments in the cotton fabrics, causing them to lose their color-developing ability, thereby achieving a bleaching effect. After the reaction, ozone will be reduced to oxygen, leaving no toxic or harmful residues. The structural design of tension roller 3 ensures that the cotton fabrics are in full contact with the ozone water, ensuring uniform bleaching. The refrigeration unit maintains a normal temperature environment, ensuring the oxidizing activity of ozone, while avoiding safety hazards caused by high temperatures.
[0029] Compared to traditional hydrogen peroxide bleaching, the above method eliminates the need for frequent manual testing of residual components. It relies on an online ozone concentration monitoring system for automated monitoring, reducing human error. Furthermore, ozone bleaching does not require high temperatures and can operate efficiently at room temperature. In addition, ozone reacts with pigments and other substances to produce water, carbon dioxide, and other inorganic substances, eliminating the discharge of recalcitrant wastewater containing pollutants such as COD. This significantly reduces environmental treatment costs and aligns with the needs of green production.
[0030] For the core equipment, such as Figure 1 , Figure 2As shown, it illustrates a rapid bleaching device for cotton fabrics using high-concentration ozone water according to an embodiment of the present invention, including a bleaching tank 1 and several sets of tension rollers 3. The bleaching tank 1 serves as the main body of the device, as shown in the figure. Figure 1 As shown, the structure is a closed cavity with inlets 101 and outlets 102 pre-set on the left and right sides of its outer wall. The size of the two openings is adapted to the width and thickness of the cotton fabric belt 2, ensuring that the cotton fabric belt 2 can pass through smoothly and continuously, while reducing ozone leakage and ozone water overflow, and maintaining a stable bleaching environment inside the chamber. Several sets of tension rollers 3 are used as tension roller 3 components. They are installed in a horizontal rotating manner. The two ends of the tension rollers 3 are embedded in the inner wall of the bleaching chamber 1 through bearings to ensure rotational flexibility. Each set of tension rollers 3 is arranged at intervals along the length of the bleaching chamber 1. The axes of each set of tension rollers 3 are parallel to each other, and the height of the roller surface is adapted to the ozone water level, ensuring that the cotton fabric belt 2 can be completely immersed in the ozone water and that the whole is in contact with the ozone water.
[0031] As a further implementation, regarding the arrangement characteristics of the tensioning rollers 3, such as... Figure 2 As shown, several groups of tension rollers 3 are evenly distributed along the horizontal transverse direction of the bleaching box 1 (i.e., the direction perpendicular to the direction of travel of the cotton fabric belt 2). The spacing between groups is set according to the size of the bleaching box 1 and the bleaching requirements, usually 30-50cm. Within each group, the tension rollers 3 are arranged from top to bottom with a vertical spacing of 15-25cm, forming a multi-layer guide structure. This arrangement can extend the immersion path and contact time of the cotton fabric belt 2 in the ozone water, thereby improving the bleaching effect.
[0032] As a further implementation method, regarding the number and adaptation characteristics of the tensioning rollers 3, firstly, each group of tensioning rollers 3 is fixedly composed of four roller bodies. The four roller bodies form a "Z"-shaped guide path from top to bottom. The cotton fabric belt 2 passes around the roller surfaces of the four tensioning rollers 3 in sequence, which ensures the tension of the cotton fabric belt 2 while avoiding scratching the fabric surface, ensuring that the fabric is evenly spread across the entire width. Specifically, as shown in... Figure 2 As shown, assuming the rollers are 1 to 4 from top to bottom, the cotton fabric belt 2 winds from the left side of the lower 4 rollers to the right side of the upper 2 rollers, then winds to the right side of the lower 3 rollers, and finally winds to the left side of the upper 1 roller. The same applies to each group of tension rollers 3.
[0033] As a further implementation, the tension roller 3 is extended to a hollow cylindrical structure, and the material can be corrosion-resistant stainless steel to ensure structural strength and resistance to ozone water corrosion. Specifically, its two ends are sealed to the ozone supply pipe through rotary joints. The rotary joints ensure the fixation and sealing of the ozone supply pipe when the tension roller 3 rotates. The other end of the ozone supply pipe is connected to an ozone generator, and several ozone nozzles 301 are evenly opened along the axial direction on the outer peripheral wall of the tension roller 3 (the several ozone nozzles 301 are arranged at equal intervals along the axial direction of the tension roller 3, with an axial spacing of 20-30mm, to ensure that the ozone spray covers the entire length of the tension roller 3 and is compatible with the width of the cotton fabric belt 2), so as to achieve uniform spraying of ozone into the box and quickly replenish the ozone concentration of the ozone water. Compared with the method of simply injecting ozone from a single inlet of the bleaching box 1, the control accuracy of ozone concentration is improved.
[0034] Furthermore, a miniature one-way valve can be embedded in each ozone nozzle 301, using a rubber-sealed valve core, which only allows ozone to flow unidirectionally from the hollow roller into the box, effectively preventing ozone water from flowing back into the tension roller 3 and the ozone supply pipe, thus avoiding pipe blockage and corrosion.
[0035] As a further implementation method, such as Figure 3 , Figure 4 As shown, the end of the tension roller 3 is connected to the rotary joint via a flange, and the rotary joint is connected to the ozone supply pipe to ensure stable ozone input into the hollow roller. A serpentine groove 4 is provided axially inside the tension roller 3 and is fixedly connected to the inner wall of the tension roller 3 by an integral molding process (welding or bolting). The serpentine structure extends the flow path of ozone in the roller, avoids local ozone accumulation, and realizes that ozone is evenly distributed to each ozone nozzle 301 along the axial direction of the roller.
[0036] Specifically, such as Figure 4 As shown, the serpentine trough 4, from the inside out, sequentially nests and encloses arc plate one 401, arc plate two 402, and arc plate three 403. All three arc plates are concentric arcs, made of the same material as the tension roller 3. The ends of arc plate one 401, arc plate two 402, and arc plate three 403 are all fixed to the inner end wall of the tension roller 3 by welding, forming a closed serpentine flow channel. Each of the three arc plates has an opening 404, the width of which is the same as the width of the trough. Arc plate three 403... The opening 404 is away from the ozone nozzle 301. The opening 404 of the second arc plate 402 is set in the opposite direction to the opening 404 of the third arc plate 403. The opening 404 of the first arc plate 401 is set in the opposite direction to the opening 404 of the second arc plate 402. The staggered openings 404 form a continuous serpentine flow channel, which enables ozone to flow along the flow channel after entering the tension roller 3 from the end, and finally be uniformly discharged from the ozone nozzle 301, further improving the uniformity of ozone distribution.
[0037] As a further implementation, the tension roller 3 is a passive rotating roller without an independent driving device, while the cotton fabric belt 2 flows along a preset path under the pull of an external traction device (such as a drive wheel or traction roller). The friction between the cotton fabric belt 2 and the roller surface of the tension roller 3 drives the tension roller 3 to rotate synchronously, realizing the zero-differential linkage between the tension roller 3 and the cotton fabric belt 2, avoiding fabric stretching and deformation. Furthermore, during the rotation of the tension roller 3, several ozone nozzles 301 also rotate synchronously, further improving the uniformity of ozone distribution and the accuracy of ozone concentration control.
[0038] The working process of bleaching tank 1 is as follows: First, an appropriate amount of clean water is injected into bleaching tank 1, and the ozone generator is started. Ozone enters the hollow cavity of tension roller 3 through the ozone supply pipe and rotary joint. After being evenly distributed through the serpentine trough 4, it is sprayed into the clean water from the ozone nozzle 301 to form high-concentration ozone water. The temperature of the ozone water in the tank is adjusted to a normal temperature of about 10°C by an external temperature control device (such as a refrigeration unit). Then, the external traction device is started, and the cotton fabric belt 2 enters from the inlet 101 of bleaching tank 1 and passes around each group of tension rollers 3 in sequence (each group of four rollers forms a "Z" shaped path). Under the forced tension of the tension rollers 3, the cotton fabric belt 2 unfolds fully, avoiding stacking and curling, and is completely submerged in the ozone water. At the same time, the flow of the cotton fabric belt 2 drives the tension rollers 3 through friction. Passive rotation ensures smooth fabric movement. Simultaneously, ozone water bleachs the cotton fabric by destroying the pigment molecular structure through strong oxidation. Tension roller 3 continuously sprays ozone from the nozzle, replenishing the ozone consumed by the reaction in the ozone water to maintain a stable ozone concentration. It also generates tiny ozone bubbles to enhance the contact effect between ozone and the fabric surface, improving bleaching efficiency. A one-way valve effectively prevents ozone water from flowing back to tension roller 3 and the supply pipe. Finally, the fully bleached cotton fabric belt 2 continues to move along the preset path and is discharged from outlet 102 of bleaching box 1, entering the subsequent washing and drying processes. Throughout the process, the online ozone concentration detection system monitors the ozone concentration in the box in real time and maintains a stable concentration by adjusting the output power of the ozone generator, without the need for manual intervention.
[0039] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.
Claims
1. A rapid bleaching device for cotton fabrics using high-concentration ozone water, characterized in that, include: The bleaching box (1) has an inlet (101) and an outlet (102) on its outer wall for cotton fabric belts (2) to pass through. Several sets of tension rollers (3) are arranged horizontally in the bleaching box (1). The tension rollers (3) are arranged at intervals. Each set of tension rollers (3) is used to tension the cotton fabric belt (2) so that the cotton fabric belt (2) is completely in contact with the ozone water in the bleaching box (1).
2. The rapid bleaching equipment for cotton fabrics with high-concentration ozone water according to claim 1, characterized in that, Several groups of tension rollers (3) are arranged at intervals along the horizontal direction, and each group of tension rollers (3) includes several tension rollers (3) arranged at intervals from top to bottom.
3. The rapid bleaching equipment for cotton fabrics with high-concentration ozone water according to claim 2, characterized in that, Each set of tension rollers (3) includes four tension rollers (3), and the cotton fabric belt (2) can pass through each tension roller (3) in sequence so that the entire cotton fabric belt (2) comes into contact with the ozone water in the bleaching tank (1).
4. The rapid bleaching equipment for cotton fabrics with high-concentration ozone water according to any one of claims 1 to 3, characterized in that, Each tensioning roller (3) is a hollow roller and connected to an ozone supply pipe, and each tensioning roller (3) has an ozone nozzle (301) on its outer peripheral wall so that each tensioning roller (3) can spray ozone into the bleaching box (1).
5. The rapid bleaching equipment for cotton fabrics with high-concentration ozone water according to claim 4, characterized in that, There are several ozone nozzles (301), and the ozone nozzles (301) are arranged at intervals along the axial direction of the tension roller (3). Each ozone nozzle (301) is provided with a one-way valve to prevent the ozone water in the bleaching tank (1) from flowing back into the tension roller (3).
6. The rapid bleaching equipment for cotton fabrics with high-concentration ozone water according to claim 4, characterized in that, The end of the tension roller (3) is connected to the ozone supply pipe, and a serpentine groove (4) is provided inside the tension roller (3) along the axial direction of the tension roller (3) so that the ozone inside the tension roller (3) can be evenly discharged from the ozone nozzle (301).
7. The rapid bleaching equipment for cotton fabrics with high-concentration ozone water according to claim 6, characterized in that, The serpentine groove (4) includes arc plate one (401), arc plate two (402) and arc plate three (403) wrapped from the inside out. Both ends of arc plate one (401), both ends of arc plate two (402) and both ends of arc plate three (403) are connected to the inner end wall of the tension roller (3). Arc plate one (401), arc plate two (402) and arc plate three (403) are all arc-shaped and have openings (404). The opening (404) of arc plate three (403) is far away from the ozone nozzle (301). The opening (404) of arc plate two (402) is far away from the opening (404) of arc plate three (403). The opening (404) of arc plate one (401) is far away from the opening (404) of arc plate two (402).
8. The rapid bleaching equipment for cotton fabrics with high-concentration ozone water according to claim 4, characterized in that, Each of the tensioning rollers (3) is a passive rotating roller so that the cotton fabric belt (2) can drive the tensioning roller (3) to rotate after it flows.
9. A rapid bleaching system for cotton fabrics using high-concentration ozone water, characterized in that: Use the rapid bleaching equipment for cotton fabrics with high concentration ozone water as described in any one of claims 1 to 8.